An unknown amount of time had passed since Gabriel started killing the Beasts of Abyss, slowly moving deeper and deeper into the Abyss.
There was no sense of time in the Abyss. There was no day and there was no night, which made it feel as if he had been doing the same team without a break for years.
Moreover, he didn't even get tired thanks to the dagger made from the Devil's Blood. With each life he room, his own life essence increased, removing all his tiredness, as if the Dagger was made especially to kill.
Gabriel even forgot the count of how many beasts he killed.... thousand? Hundred thousand? Millions or even hundreds of millions? However no matter how many he killed, there were always more Abyssal Beasts to be found.
It was as if there were an endless number of Abyssal Beasts in the Abyss that was beyond imagination. He was still at the edge of the Outer Zone, but the deeper he went, the stronger the beasts became.